US2764782A - Top roll for textile drawing mechanisms - Google Patents

Top roll for textile drawing mechanisms Download PDF

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Publication number
US2764782A
US2764782A US209286A US20928651A US2764782A US 2764782 A US2764782 A US 2764782A US 209286 A US209286 A US 209286A US 20928651 A US20928651 A US 20928651A US 2764782 A US2764782 A US 2764782A
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US
United States
Prior art keywords
roll
rolls
friction
bosses
cots
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US209286A
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English (en)
Inventor
Louis M Cotchett
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Individual
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Individual
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Filing date
Publication date
Priority to BE508169D priority Critical patent/BE508169A/xx
Application filed by Individual filed Critical Individual
Priority to US209286A priority patent/US2764782A/en
Priority to FR1047111D priority patent/FR1047111A/fr
Application granted granted Critical
Publication of US2764782A publication Critical patent/US2764782A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H2700/00—Spinning or twisting machines; Drafting devices
    • D01H2700/245—Conception or fabrication of drafting cylinders

Definitions

  • the present invention is an improvement in drawing rolls used for the drafting of textile fibers in the production of sliver, roving, and yarn, and relates particularly to top rolls of the so-called solid type in which the entire roll rotates as a unit, and which conventionally comprises a cast iron or steel body having two integral enlargements or bosses connected by a reduced or neck portion and also having an integral reduced portion projecting from the outer end of each boss forming a pintle or journal, the bosses being covered with cots of leather or synthetic or other non-metallic cushioning material having a moderate amount of resilience, which cots ride on the fluted lower rolls which are driven and impart rotation to the top rolls.
  • the top rolls are pulled down against the bottom rolls by weighting means applying its pressure to the top rolls through a saddle which bears on the neckof each top roll between the two bosses.
  • weighting means applying its pressure to the top rolls through a saddle which bears on the neckof each top roll between the two bosses.
  • the protruding journals at the ends of each roll are held in slots formed in cap bars located at opposite sides of each roll thus constituting bearings maintaining the top roll in its proper working position.
  • lubrication must be supplied; but the lubricant used must be applied with the utmost restraint and accuracy to the bearing surfaces alone, both because the oil picks up the ever-present lint and fly to collect on the necks and pintles, under the saddle, and in the cap bar slots, and also because any spot or film of oil on the cots or on the fibrous material being drafted interferes with the drawing and damages the material.
  • du Pont de Nernours Co..s nylon and Teflon the latter a polytetrafluoroethylene polymer, are peculiarly suitable because of their superior frictional characteristics which obviate or greatly reduce the necessity for the use of any lubricant.
  • the elements of synthetic material forming the bearing surfaces required-to be made by ope-rations sepa rate from the forming of the roll and to be applied thereto as additional component elements, which procedure compels them to be accuratelymachined and fitted, at an additional cost which through far less than the cost of anti-friction shell type rolls, is still'materially greater than that ofplain solid rolls.
  • a leading object of the present invention is to produce a strong and las ing solid type roll possessing all the advantages of the rolls having applied synthetic or other low-friction bearing surfaces requiring little or no lubrication, while capable of being produced at a materially lower cost.
  • FIG. 1 is a part-sectional view of a solid roll comprising an arbor of low-friction material having metal sleeves applied to form the bosses.
  • Fig. 2 is a part-sectional view of a solid roll similar to that of Pig. .1, in which the low friction arboris reinforced by a metallic core.
  • Fig. '3 is :a corresponding view of the same type of roll 'in which .thearbor and bosses are integral andtheentire roll save the cots is made of low-friction material.
  • Fig. 4 is a part-sectional view of a solid. roll similar to that of Fig. 3, with a reinforcing core of metal.
  • the roll body l is in the form of an arbor made of a single cylindrical piece of nylon, Teflon, or other synthetic material having the desired characteristics of low co-eflicient of friction and corresponding relative resistance to wear of its bearing surfaces even in the absence of all lubricant, coupled with adequate rigidity, ease of molding, and retention of shape and dimensions.
  • This body 1 is preferably made of the maximum diameter permitted by the size and construction of the frame in which it is to serve, i.
  • the extremities of the arbor being reduced in diameter to form pintles 3 of the proper size to fit the notches in the capbars (not shown) of the spinning or other frame.
  • Steel sleeves 5 fitting upon the full-diameter portion of the body 1, preferably with a press fit, are installed on the body 1 with their outer ends at the terminus of the full diameter portion of the body 1 and their inner ends spaced apart a distance in excess of the width of the saddle (not shown) of the Weighting system which presses this top roll against its cooperating bottom roll (not shown) when in use, the saddle making its contact solely with the surface 15 of the portion of low-friction material of body 1 thus left exposed at the neck of the roll.
  • Sleeves 5 thus form the bosses of the roll, which is completed by applying cots 13 of leather, rubber, or other suitable composition adhesively in usual manner to the outer surface of each sleeve 5, such surfaces being preferably knurled or grooved as in conventional practice to provide a better grip for the cement.
  • the steel sleeves 5 serve to widen the field of synthetic materials which can be used to form the body or arbor, since a number of otherwise suitable synthetic materials have the characteristic of changing their shape and dimensions under certain circumstancea for reasons not fully understood.
  • the sleeves 5 maintain a truly cylindrical shape throughout the life of the roll in spite of such changes taking place in the material of body 1, as Well as aiding through stiffening the roll to prevent its bending under the load of the saddle when in use.
  • Fig. 2 has its body or arbor formed in nylon, Teflon, or other suitable low-friction synthetic material 17 molded about a steel or other metallic shaft or core 19, preferably of circular section, axially disposed within the plastic 17, the rest of the roll construction being as in Fig. 1, namely with shells 2.1 of steel or other metal fitted on the arbor and secured by pins 23, with the cots 25 adhesively atiixed to the exterior of the shells.
  • the low-friction synthetic material 17 forms the bearing surfaces for the roll at the pintles 27 and the neck 29.
  • the steel shaft or core 19 stiffens the roll against bending under the load of the saddle, as well as preventing deformation and warping of the roll out of true axial alignment through internal changes in the plastic or from other causes; while the steel shells 21 serve as in Fig. 1.
  • the entire roll with the exception of the applied cots 29 is formed of suitable low-friction synthetic plastic material in a single molding operation in its final form and dimensions.
  • the plastic material 31 comprises both the bosses 33 on which the cots 29 are adhesively mounted :and the portions of reduced diameter forming the pintles 35 and the neck 37 which serve as the bearing surfaces, the bosses 33 thus being integral with and forming portions of the arbor which no longer has a separate identity.
  • this roll is adapted for use in many instances such as under light weighting pressures and at slower speeds, as in the case of back rolls. Through its extremely low cost con struction with absence of all handling, machining, and assembly operations except the applying and bufiing of the cots, it can be economically discarded and replaced when it does become no longer usable.
  • Fig. 4 is like that of Fig. 3 in that the bosses 39 are integral with the body of the roll and the pintles 41 and neck 43, all being molded in finished form in a single operation, with cots 45 subsequently adhesively applied directly to the surface of the bosses 39.
  • An adidtional feature of this form is the provision of a steel or other metallic shaft or core 47 which as in the case of Fig. 2 stiffens the entire roll to prevent bending under the load of the saddle applied to the neck 43.
  • the addition of the core 47 makes possible the use of synthetic materials otherwise rendered unsuitable through weaknesses in these respects through characterized by other desirable features such as low coefficicnts of friction, ease of molding, and cheapness.
  • the core 47 is centered in the mold during molding, and the entire roll with the exception of the cots is produced in its lnished form and dimensions at a single operation.
  • a top roll for the drawing mechanisms of spinning and roving frames comprising in combination a roll body of synthetic plastic material and having portions of relatively greater diameter forming bosses on the roll, and portions of relatively lesser diameters forming a neck and pintles on the roll, and cots carried by the bosses.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US209286A 1951-02-03 1951-02-03 Top roll for textile drawing mechanisms Expired - Lifetime US2764782A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE508169D BE508169A (is") 1951-02-03
US209286A US2764782A (en) 1951-02-03 1951-02-03 Top roll for textile drawing mechanisms
FR1047111D FR1047111A (fr) 1951-02-03 1951-12-26 Cylindre supérieur pour mécanismes d'étirage des textiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US209286A US2764782A (en) 1951-02-03 1951-02-03 Top roll for textile drawing mechanisms

Publications (1)

Publication Number Publication Date
US2764782A true US2764782A (en) 1956-10-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US209286A Expired - Lifetime US2764782A (en) 1951-02-03 1951-02-03 Top roll for textile drawing mechanisms

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US (1) US2764782A (is")
BE (1) BE508169A (is")
FR (1) FR1047111A (is")

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977748A (en) * 1955-05-18 1961-04-04 William A Zisman Lubricated wire rope
US6390962B1 (en) * 1999-02-24 2002-05-21 Texparts Gmbh Roller for belt stretching mechanism
US20100252393A1 (en) * 2009-04-06 2010-10-07 Chen Po-Feng Skate-Wheel Positioning Structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1047084B (de) * 1956-01-25 1958-12-18 Skf Kugellagerfabriken Gmbh Festwalzenpaar fuer Streckwerke fuer Spinnereimaschinen, insbesondere Fein- oder Vorspinnmaschinen

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US21333A (en) * 1858-08-31 Top roller for spinning- machinery
US475929A (en) * 1892-05-31 Non-metallic bearing
US484760A (en) * 1892-10-18 Self and joshua b
US1915043A (en) * 1930-08-08 1933-06-20 Du Pont Viscoloid Co Roller
GB518465A (en) * 1938-05-09 1940-02-28 Cotonificio Valle Di Susa Sa Improvements in the axles and shafts of the drawing rollers or upper rollers of spinning machines
US2228406A (en) * 1937-05-11 1941-01-14 Firm S A Cotonificlo Valle Di Bearing for spinning machine rollers
US2246086A (en) * 1940-01-08 1941-06-17 Du Pont Bearing
US2246092A (en) * 1940-07-26 1941-06-17 Du Pont Bearing
US2256193A (en) * 1939-08-10 1941-09-16 Gen Motors Corp Top roll
US2304656A (en) * 1941-02-20 1942-12-08 Dayton Rubber Mfg Co Spinning cot
US2618024A (en) * 1949-12-30 1952-11-18 Whitin Machine Works Textile drafting mechanism
US2671934A (en) * 1948-08-30 1954-03-16 Dixon Corp Top roll for spinning frames or the like

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US21333A (en) * 1858-08-31 Top roller for spinning- machinery
US475929A (en) * 1892-05-31 Non-metallic bearing
US484760A (en) * 1892-10-18 Self and joshua b
US1915043A (en) * 1930-08-08 1933-06-20 Du Pont Viscoloid Co Roller
US2228406A (en) * 1937-05-11 1941-01-14 Firm S A Cotonificlo Valle Di Bearing for spinning machine rollers
GB518465A (en) * 1938-05-09 1940-02-28 Cotonificio Valle Di Susa Sa Improvements in the axles and shafts of the drawing rollers or upper rollers of spinning machines
US2256193A (en) * 1939-08-10 1941-09-16 Gen Motors Corp Top roll
US2246086A (en) * 1940-01-08 1941-06-17 Du Pont Bearing
US2246092A (en) * 1940-07-26 1941-06-17 Du Pont Bearing
US2304656A (en) * 1941-02-20 1942-12-08 Dayton Rubber Mfg Co Spinning cot
US2671934A (en) * 1948-08-30 1954-03-16 Dixon Corp Top roll for spinning frames or the like
US2618024A (en) * 1949-12-30 1952-11-18 Whitin Machine Works Textile drafting mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977748A (en) * 1955-05-18 1961-04-04 William A Zisman Lubricated wire rope
US6390962B1 (en) * 1999-02-24 2002-05-21 Texparts Gmbh Roller for belt stretching mechanism
US20100252393A1 (en) * 2009-04-06 2010-10-07 Chen Po-Feng Skate-Wheel Positioning Structure

Also Published As

Publication number Publication date
BE508169A (is")
FR1047111A (fr) 1953-12-11

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